docs: def configfile(f):
      """ This decorator will parse a configuration file in YAML format
          and store the dictionary in ``ctx.blockchain.config``
      """
  
      @click.pass_context
      def new_func(ctx, *args, **kwargs):
          ctx.config = yaml.load(open(ctx.obj["configfile"]))
          return ctx.invoke(f, *args, **kwargs)
  
      return update_wrapper(new_func, f)